As part of us migrating from ISDN to a BT SIP setup (with gateway), we decided to build a new updated freepbx server to acommodate this and migrate from our older one.
Previous was Freepbx 13 with Asterisk 11, and our new one is Freepbx 15 and Asterisk 15.
Migration seems to have gone well, with everything working as expected but with the acception of our Aastra 6755i’s no longer displaying line status on the expansion module.
Any idea where to start? Anything in particular changed between the two that would cause this to no longer work?